Restivo co-produced Nandi Bushell and Roman Morello's original song "The Children Will Rise Up" which was released in November 2021 and endorsed by President Obama.

Restivo also has the distinct honor of being uncredited in playing acoustic (rhythm and lead) guitar on the hit "Hips Don't Lie" by Shakira featuring Wyclef Jean.

Since then, he has recorded, produced, and written songs with and/or for Tom Morello, K. Flay, Bishop Briggs, Jerry Wonda, 50 Cent, Nuno Bettencourt, Steve Perry, Patti LaBelle, among others.

Throughout his career, as a guest artist, Restivo has performed lead vocals and/or guitar or bass with Rihanna, Jason Derulo, Tom Morello, Perry Farrell, Chris Cornell, Taio Cruz, Nuno Bettencourt, Trent Reznor, Smokey Robinson, Jerry Cantrell, Wyclef Jean, Extreme, AFI, Ben Harper, Billy Idol, Cypress Hill, Dave Navarro, Deborah Harry, Ed Palermo Big Band, Flea, Gilby Clarke, Graham Nash, Iggy Pop, Jackson Browne, Jason Bonham, Joe Satriani, John Densmore, Mike Keneally, Napoleon Murphy Brock, Peter DiStefano, Ray Manzarek, Robbie Krieger, Sammy Hagar, Slash, Stephen Perkins, Steve Vai, Stewart Copeland, Travis Barker, and Wayne Kramer among others.

[3] His film, television and live performance credits include: Dancing with the Stars, Good Morning America, Last Call with Carson Daly, Late Night with Conan O'Brien, Late Night with Jimmy Fallon, Late Show with David Letterman, BBC Radio 1's Big Weekend, Saturday Night Live, Teen Choice Awards, The Apprentice, The Ellen DeGeneres Show, The Late Late Show with Craig Ferguson, The Tonight Show with Jay Leno, and The View, Lollapalooza, Outside Lands, Coachella, SXSW, Pepsi Fan Jam Super Bowl Concert, Download Festival (UK), O2 Wireless Festival (UK), Hard Rock Calling (UK) and Restivo has had the honor of singing the National Anthem at the Brooklyn Nets game.